JezK
Edit File: regress-334.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Flags: --allow-natives-syntax // Test for http://code.google.com/p/v8/issues/detail?id=334 var READ_ONLY = 1; var DONT_ENUM = 2; var DONT_DELETE = 4; function func1(){} function func2(){} var object = {__proto__:{}}; %SetProperty(object, "foo", func1, DONT_ENUM | DONT_DELETE); %SetProperty(object, "bar", func1, DONT_ENUM | READ_ONLY); %SetProperty(object, "baz", func1, DONT_DELETE | READ_ONLY); %SetProperty(object.__proto__, "bif", func1, DONT_ENUM | DONT_DELETE | READ_ONLY); object.bif = func2; function enumerable(obj) { var res = []; for (var i in obj) { res.push(i); } res.sort(); return res; } // Sanity check: expected initial state. assertArrayEquals(["baz", "bif"], enumerable(object), "enum0"); assertFalse(delete object.foo, "delete foo"); assertFalse(delete object.baz, "delete baz"); assertEquals(func1, object.foo, "read foo"); assertEquals(func1, object.bar, "read bar"); assertEquals(func1, object.baz, "read baz"); assertEquals(func2, object.bif, "read bif"); // Can't assign to READ_ONLY. object.bar = "NO WAY"; assertEquals(func1, object.bar, "read bar 2"); assertArrayEquals(["baz", "bif"], enumerable(object), "enum1"); // Assignment to non-readonly. Assignment shouldn't change attributes! object.foo = func2; assertArrayEquals(["baz", "bif"], enumerable(object), "enum2"); assertFalse(delete object.foo, "delete foo 2"); // Delete should erase attributes if value set again. assertTrue(delete object.bar, "delete bar"); assertFalse("bar" in object, "has bar"); object.bar = func2; assertTrue("bar" in object, "has bar 2"); assertEquals(func2, object.bar, "read bar 3"); assertArrayEquals(["bar", "baz", "bif"], enumerable(object), "enum3"); // Unshadowing a prototype property exposes its attributes. assertTrue(delete object.bif, "delete bif"); assertArrayEquals(["bar", "baz"], enumerable(object), "enum4"); assertEquals(func1, object.bif, "read bif 2"); // Can't delete prototype property. assertTrue(delete object.bif, "delete bif 2"); assertArrayEquals(["bar", "baz"], enumerable(object), "enum5"); assertEquals(func1, object.bif, "read bif3");